/*
 * Copyright 2011 Kim Lindhardt Madsen
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */

package dk.lindhardt.gwt.geie.shared;

import com.google.gwt.i18n.client.NumberFormat;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.Widget;

/**
 * User: AnAmuser
 * Date: 29-07-11
 * <p/>
 * Holds a formula and when the formula has been evaluated the calculated value of the formula
 */
public class NumberFormulaCell extends FormulaCell<Double> {

   /**
    * For serialization
    */
   NumberFormulaCell() {
      super();
   }

   public NumberFormulaCell(Formula value, Position position, CellFormatKey cellFormatKey) {
      super(value, position, cellFormatKey);
   }

   public NumberFormulaCell(Formula value, int row, int col, CellFormatKey cellFormatKey) {
      super(value, row, col, cellFormatKey);
   }

   public NumberFormulaCell(
         Formula value, int row, int col, int spanRow, int spanCol, CellFormatKey cellFormatKey) {
      super(value, row, col, spanRow, spanCol, cellFormatKey);
   }

   public Widget toWidget(CellFormat format) {
      Label label = new Label();
      if (format != null) {
         String pattern = format.getPattern();
         NumberFormat formatter = pattern != null ? NumberFormat.getFormat(pattern) : NumberFormat.getDecimalFormat();
         label.setText(formatter.format(getCalculatedValue()));
      } else {
         label.setText(getValue().toString());
      }
      return wrapIfLink(label);
   }

   public Cell copy() {
      Formula formula = getValue();
      Formula newFormula = new Formula(formula.getFormula());
      newFormula.setCellVariables(formula.getCellVariables());
      return new NumberFormulaCell(
            newFormula, getPosition().copy(), getCellFormatKey());
   }
}
